:root {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --border-color: #334155;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #10b981;
    --code-bg: #090d16;
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.navbar {
    border-bottom: 1px solid var(--border-color);
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 1.4rem;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.badge {
    background: var(--border-color);
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    font-weight: 500;
}

.nav-links {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.15s ease;
}

.nav-links a:hover {
    color: var(--text-main);
}

.btn-playground {
    background: var(--primary);
    color: #fff !important;
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    font-weight: 600;
}

.btn-playground:hover {
    background: var(--primary-hover);
}

.content-wrapper {
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 1.5rem 6rem;
}

.hero {
    text-align: center;
    padding: 3rem 0 4rem;
}

.hero-badge {
    display: inline-block;
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
    border: 1px solid rgba(59, 130, 246, 0.3);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.15rem;
    max-width: 720px;
    margin: 0 auto 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s ease;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s ease;
}

.btn-secondary:hover {
    background: #273549;
}

.grid-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.75rem;
    border-radius: 12px;
}

.card-icon {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

.card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.section {
    margin: 4rem 0;
}

.section h2 {
    font-size: 1.75rem;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.section > p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.code-block {
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin: 1.5rem 0;
}

.code-header {
    background: #111827;
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.btn-copy {
    background: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
}

.btn-copy:hover {
    background: #334155;
}

pre {
    padding: 1.25rem;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.5;
}

code {
    font-family: var(--font-mono);
}

.api-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.badge-method {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.badge-method.get {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.4);
}

.badge-method.post {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.4);
}

.api-endpoint {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1rem;
    min-width: 100px;
}

.api-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

.footer {
    border-top: 1px solid var(--border-color);
    background: #090d16;
    padding: 2.5rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer a {
    color: var(--primary);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    .nav-links a:not(.btn-playground) {
        display: none;
    }
    .api-card {
        flex-direction: column;
        gap: 0.5rem;
    }
}